Gas-fire appliance.



Patented Apr. l5, I902.

J. F. HEWITT.

GAS FIRE APPLIANCE.

(Application filed July 22, 1899.)

(No Model.)

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JOSEPH F. HEWITT, OF ALLEGHENY, PENNSYLVANIA.

GAS-FIRE APPLIANCE.

SPECIFICATION forming part of Letters Patent No. 697,941, dated April15, 1902.

Application filed July 22,1899- Serial No. 725 759. (No model.)

To (LZZ whom it may concern/.-

Be it known that I, JOSEPH F. HEWITT, a citizen of the United States,residing at Allegheny, in the county of Allegheny and State ofPennsylvania, have invented or discovered a certain new and usefulImprovementin Gas- Fire Appliances, of which improvement the followingis a specification, reference being had therein to the accompanyingdrawings, in which- Figure 1 indicates a perspective view of a gas-logembodying my invention. Fig. 2 is a front elevation of the skeletonframe of the same. Fig. 3 is an end view of the skeleton frame. Fig. iis a section taken on the line a; an of Fig. 2, and Fig. 5 is a sectiontaken on the line 3 y of Fig. 1.

My invention relates to improvements in gas-fire appliances, commonlycalled gaslogs.

The object of my invention is to simplify the construction and add tothe durability and efficiency of devices of this character.

Heretofore, so far as I am aware, gas appliances constructed to imitatelogs in combustion have been formed of clay shaped into hollowcylindrical bodies of irregular exterior to imitate bark and roughprojections on legs. Perforations formed in the front of the sameenabled gas, or gas and air mixed, contained in said hollow cylindricalbodies to issue therethrough and when ignited present the appearance ofburning logs. were difiicult to construct, quite fragile, and veryliable to breakage in shipping, and when perforated the punch or otherinstrument used in forming the holes produced a bur on the interior,which had a tendency to interfere with the proper discharge of the gas,and thus caused uneven distribution of flame over the surface of theburner.

My invention is intended to obviate the difficulty incident to theconstruction above mentioned; and to this end it consists in forming thefront or burning face of the superstructure or frame of metallic gauzeor mesh, which not only adds to the durability of the burner, but alsoenables the perforations subsequently formed in the burning-face of thedevice to be clear-cut and Well defined interiorly, as well asexteriorly, thus avoiding the formation of burs 011 the interior andpro- When so formed, they venting clogging of the perforations or holes,and thus insuring uniform distribution of flame over the entire front ofthe device.

I will now describe my invention, reference being had to theaccompanying drawings, which form a part of this specification, in whichlike reference characters indicate like parts wherever they occurthroughout the several views.

Referring to said drawings, A is a skeleton frame comprising a number ofcylindrical chambers 1, 2, and 3, which are connected, as shown in theaccompanying drawings, by means of connecting-braces 4,5,and 6, throughthe front and lower one of which the gas-conduits 5 and 6' project, orthey may be connected in any other suitable manner; Gasconduit 5communicates with a gas-inlet pipe 7, which may be connected with theusual gas and air mixer. (Not shown.) The rear chamber, or chambers, ifdesirable, is not supposed to contain gas and air mixed, the same beingfilled with a plastic refractory material of any suitable composition. Ipreferably fill the rear chamber and the rear portion of the frontchambers, at the ends thereof, with a fibrous refractory material B toprevent gas accumulating therein, and thus avoid possible explosion. Thefront-cylindrical chambers 2 and 3 are subdivided longitudinally bypartitions a a, in the center of which are formed gas-admission orificesa a. The upper and lower edgesof said partitions a a are provided withhooks a a, in which the metallic gauze b is secured or fastened. Theends of the said chambers to the rear of said partitions are filled withany suitable fibrous refractory material, as heretofore specified, toprevent the accumulation of gas therein. The said gauze b constitutesthe front superstructure of the front chambers of the apparatus and issup ported and held in curved or circular shape, as shown in Fig. 3, bythe arches or braces 12' b, which are formed of heavy wire or othersuitable material, over which and the entire super structure is molded,in the form of logs horizontally disposed, a plastic compound of mineralwool or asbestos, or both, and the front of the same punctured withnumerous small openings or perforations c, as shown in Fig. 1. The saidperforations 0 pass through.

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the refractory material and into the interstices of the gauze or mesh,the interstices of the gauze or mesh forming Well-defined and clear-cutopenings on the interior, preventing the refractory material pressedinwardly around the openings from forming a bur, which after usage has atendency to break down and fill and clog the openings, and thus preventthe uniform and even distribution of combustible gas over the entireface of the device. The gauze or mesh in which the openings are formedinsures solid and even Walls around the interior openings, prevents theformation of the bur, produces clear-cut openings, and removes thedanger of clogging of the openings, insuring even distribution of thegases of combustion over the entire face of the device.

I preferably harden the asbestos board which forms the cylindricalchambers and the partition a by saturating or dipping the same into asolution of silicate of soda or other suitable solution.

My improved appliance is arranged as shown in the accompanying drawings,the logs being horizontally disposed, the front or burning logs beingvertically arraugedt. 6., one above the other.

Having described my invention, what I claim, and desire to secure byLetters Patent, 1s-

1. A gas-burner comprising a hollow body formed of refractory materialand metallic gauze or mesh, the refractory material forming the frontbeing supported by the gauze or mesh and having numerous minuteperforations formed therein through the interstices of the gauze.

2. A gas-burner comprising a number of intercommunicating bodiesformedof refractory material and metallic gauze or mesh, the refractorymaterial forming the face thereof being supported by the gauze or meshand having numerous minute perforations therein through the intersticesof the gauze.

In testimony whereof I, JOSEPH F. HEWITT, have hereunto set my hand inthe presence of two subscribing witnesses.

JOSEPH F. HEWITT. [L. s.]

JNo. H. RoNEY, o

In presence of CLARENCE A. WILLIAMS.

